许多粉末冶金应用 ,要求烧结零件能耐高的静力学和动力学工作应力。提高烧结密度是提高动力学性能 ,获得适当显微组织的关键参数之一。在市场上的低合金钢粉中 ,低钼合金钢粉令人感兴趣 ,因为这种合金元素仅对粉末压制性有轻微影响 ,却很有效地提高淬透性和力学性能。此外 ,像Ni和Cu关键性元素混合到基础钢粉中或在退火处理过程中扩散粘结到钢颗粒上 ,也会通过改善显微组织使力学性能提高。本文研究了含有不同量的预合金的低Mo合金钢粉的抗拉和动力学性能。也讨论了将Ni和Cu预混合或扩散粘结到这些钼钢中的作用 ,特别是对轴向疲劳性能和强度的影响。还与其它类型疲劳试样和 /或试验方法所得结果进行了对比 Many powder metallurgy applications require that sintered parts withstand high static and dynamic working stresses. Increasing the sintering density is one of the key parameters for improving the kinetic properties and obtaining the proper microstructure. Of the low alloyed steel powders on the market, low molybdenum alloyed steel powders are of interest because these alloying elements have only a minor effect on the powder compactibility, but effectively improve the hardenability and mechanical properties. In addition, the incorporation of key elements such as Ni and Cu into the base steel powder or diffusion bonding to the steel particles during the annealing process also improves the mechanical properties by improving the microstructure. In this paper, tensile and dynamic properties of low Mo steel with different amounts of pre-alloyed steel were investigated. The effect of pre-mixing or diffusion bonding of Ni and Cu to these molybdenum steels is also discussed, particularly with regard to axial fatigue properties and strength. It is also compared to the results obtained with other types of fatigue specimens and / or test methods